PUSH ROD ADJUSTMENT

First make sure you adjust to the TPI that the pushrod instructions say

1. Remove spark plugs
2. Install adjustable pushrods (fully collapsed)
3. Use clothes pins to hold up pushrod tubes (4 ea)
4. Jack up bike so rear tire is able to free spin
5. Place transmission in top gear (5th or 6th depending on transmission)
6. Rotate wheel while watching rear exhaust pushrod, observe the pushrod go up then down. When it starts going down then look at the front exhaust pushrod. Observe it until it reaches the top, this will ensure that the rear exhaust pushrod is on the heal of the cam.
7. Adjust pushrods per vendors instructions.
8. Allow 10 to 15 minutes for the tappet to bleed down before rotating the motor to adjust the next pushrod. Pushrod when fully bled down will spin between your fingers.
9. Rotate wheel while watching the rear intake pushrod, observe the pushrod go up then down. When it starts going down then look at the front intake pushrod. Observe it until it reaches the top, this will ensure that the rear intake pushrod is on the heal of the cam.
10. Rotate wheel while watching the front intake pushrod, observe the pushrod go up then down. When it starts going down then look at the rear intake pushrod. Observe it until it reaches the top, this will ensure that the rear intake pushrod is on the heal of the cam.
11. Rotate wheel while watching the front exhaust pushrod, observe the pushrod go up then down. When it starts going down then look at the rear exhaust pushrod. Observe it until it reaches the top. this will ensure that the front exhaust pushrod is on the heal of the cam.

By adjusting your pushrods in this manner you will never bend them or valves unless you adjust them wrong, make sure you follow the vendor directions closely on adjustment... Adjustable pushrods are not all alike in their adjustments. It sounds to me like you knicked the valves and didn't hit the piston... I'm afraid you will have to replace the bent valve...